Docker for Mac and insecure registries

If you are using a private registry with a self-signed certificate, and need to connect to it from a macOS laptop, you are likely to incur in the following error: $ docker-compose up -d Pulling search (docker.registry.mydomain.io:5000/image:2.0.1)… ERROR: Get https://docker.registry.mydomain.io:5000/v1/_ping: x509: certificate signed by unknown authority it turns that (a) there is not much of … More Docker for Mac and insecure registries

A python notebook to experiment with the Apache Mesos HTTP API – Part 3 of 3

This is the third and final part of a three-part series: Part 1 describes the required setup and how to get Apache Mesos Master and Agent running in two Vagrant VMs; Part 2 shows how to connect to the HTTP API and accept resource offers. This series is an extended (and updated) version of the … More A python notebook to experiment with the Apache Mesos HTTP API – Part 3 of 3

A python notebook to experiment with the Apache Mesos HTTP API – Part 2 of 3

This is the second part of a three-part series: Part 1 describes the required setup and how to get Apache Mesos Master and Agent running in two Vagrant VMs This series is an extended (and updated) version of the talk I gave at MesosCon Europe 2015 updated for Apache Mesos 1.0.0, which has just been … More A python notebook to experiment with the Apache Mesos HTTP API – Part 2 of 3

A python notebook to experiment with the Apache Mesos HTTP API – Part 1 of 3

This is the first of a series of three articles that shows how to setup a Vagrant-based Apache Mesos test/development environment on your laptop; then how to run a Python notebook against the HTTP API; and finally, how to launch Docker containers on the running Agent VM. It is pretty jam-packed and requires a certain … More A python notebook to experiment with the Apache Mesos HTTP API – Part 1 of 3

What’s up with unicorns and stockmarkets?

Recently, one may have noticed commentator wringing their hands, alternatively, about either a “tech bubble” or a “dearth of tech IPOs” – sometimes, both in the same article. It is unquestionable, however, that there is now a large number of technology private companies that raise large private funding rounds (often, in excess of $100MM – not … More What’s up with unicorns and stockmarkets?

Apache Mesos HTTP API – example IPython notebook

The new Apache Mesos HTTP API We are currently in the process of releasing Mesos 0.24 which introduces a new HTTP API for Frameworks, which are now able to interact with the Scheduler using only JSON payloads. This simplifies the interaction between Frameworks and Mesos, while maintaining the highly scalable and reliable nature of the platform: … More Apache Mesos HTTP API – example IPython notebook

REST-based User Management web service in Scala

Today I’ve opened access to my sentinel repo which is still at a very early stage development, but I thought was worth sharing with others. I’ve been using Scala on and off for the past couple of years, since I’ve completed the Coursera Scala course (passed with 95% and distinction, obviously!); however, to really learn a language (and … More REST-based User Management web service in Scala